CN215262301U

CN215262301U - Air tightness detection device

Info

Publication number: CN215262301U
Application number: CN202121450598.6U
Authority: CN
Inventors: 王鑫龙; 冯平; 邹志林; 马成; 赖俊明; 姚维武; 邓力丰
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-12-21
Anticipated expiration: 2031-06-25

Abstract

The utility model relates to an air tightness detection device, including first inlet channel, with the parallelly connected second inlet channel that sets up of first inlet channel, with the equal air outlet channel who communicates of first inlet channel and second inlet channel, and the piece of aerifing. The inflatable piece is used for introducing gas into the object to be detected through the first gas inlet channel and the gas outlet channel; and the compressed air device is used for introducing compressed air into the object to be detected through the second air inlet channel and the air outlet channel. When a compressed air device can be provided on a detection site, introducing compressed gas into the object to be detected through the compressed air device so as to detect the air tightness of the object to be detected; when the detection site can not provide the compressed air device, the inflation piece that can utilize self to have inflates in to the determinand through first inlet channel for this gas tightness detection device does not receive the restriction of external condition, can continuously supply gas to the determinand, uses more in a flexible way, thereby can promote gas tightness detection device's convenience of use and use adaptability.

Description

Air tightness detection device

Technical Field

The utility model relates to an air tightness detects technical field, especially relates to an air tightness detection device.

Background

The corrugated pipe is used as a flexible pressure-resistant pipe fitting to be installed in a liquid conveying system, and when the corrugated pipe is used, the inner cavity of the corrugated pipe is filled with gas or liquid medium with certain pressure, such as combustible gas and the like, so that the sealing performance and the safety performance of the corrugated pipe must be ensured.

When the existing air tightness detection device detects the air tightness of the corrugated pipe, if a compressed air device cannot be provided on a detection site, the air tightness detection work of the corrugated pipe cannot be carried out, and the problem of inconvenient use is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an air-tightness detecting device that solves the above-mentioned problem, in order to solve the problem that the conventional air-tightness detecting device is inconvenient to use.

An airtightness detection apparatus comprising:

the air inlet structure comprises a first air inlet channel, a second air inlet channel, an air outlet channel and an inflating piece, wherein the second air inlet channel is connected with the first air inlet channel in parallel, the air outlet channel is communicated with the first air inlet channel and the second air inlet channel, and the inflating piece is arranged on the air inlet channel;

the first air inlet channel is communicated with the inflation piece; the second air inlet channel is used for connecting a compressed air device; the air outlet channel is used for being communicated with an air inlet of an object to be detected; the inflation piece injects detection gas into the object to be detected through the first air inlet channel and the air outlet channel.

In one embodiment, the air tightness detection device further comprises a pressure detection channel communicated with the air outlet channel and a pressure detector communicated with the pressure detection channel; the pressure detector is used for detecting the gas pressure in the object to be detected.

In one embodiment, the air tightness detecting device further comprises an exhaust channel communicated with the air outlet channel, and an exhaust valve arranged in the exhaust channel.

In one embodiment, the air tightness detecting device further comprises a filter disposed in the exhaust passage, and the filter is configured to filter the gas flowing out of the exhaust passage.

In one embodiment, a first one-way valve is arranged on the first air inlet channel; and a second one-way valve is arranged on the second air inlet channel.

In one embodiment, the air tightness detecting device further comprises a first input member communicated with the first air inlet channel, and the first input member is communicated with the inflating member;

the air tightness detection device further comprises a second input piece communicated with the second air inlet channel, and the second input piece is used for being communicated with a compressed air device.

In one embodiment, a regulating valve is arranged between the second input piece and the second one-way valve; the regulating valve is used for regulating the gas flow input by the second input piece.

In one embodiment, the first input member is an air tap adapter; the air nozzle joint is communicated with the inflating piece.

In one embodiment, the second input element is an input adapter; the input adapter is used for being connected with the compressed air device.

In one embodiment, the air tightness detecting device further comprises an output connector communicated with the air outlet channel, and the output connector is used for being communicated with an air inlet of the object to be detected.

The technical scheme has the following beneficial effects: the air tightness detection device comprises a first air inlet channel, a second air inlet channel, an air outlet channel and an air inflation piece, wherein the second air inlet channel is connected with the first air inlet channel in parallel, the air outlet channel is communicated with the first air inlet channel and the second air inlet channel, and the air inflation piece is communicated with the first air inlet channel and the second air inlet channel. The inflatable piece is used for introducing gas into the object to be detected through the first gas inlet channel and the gas outlet channel; and the compressed air device is used for introducing compressed air into the object to be detected through the second air inlet channel and the air outlet channel. When the compressed air device can be provided on the detection site, the second air inlet channel is connected with the compressed air device, so that compressed air is introduced into the object to be detected to detect the air tightness of the object to be detected; when the detection site can not provide a compressed air device, the air tightness detection device is provided with the inflation piece, so that the inflation piece can be utilized to inflate the air into the object to be detected through the first air inlet channel, the air tightness detection device is not limited by external conditions, the object to be detected can be continuously supplied with air, the use is more flexible, and the use convenience and the use adaptability of the air tightness detection device can be improved.

Drawings

Fig. 1 is a schematic structural diagram of an air-tightness detecting device according to an embodiment of the present invention.

Reference numerals: 10-air tightness detection means; 110 — a first air intake passage; 120-an air outlet channel; 130-a pressure detection channel; 140-a pressure detector; 150-an exhaust channel; 160-a filter; 170-a second intake passage; 210-a first input; 220-an inflatable member; 230-a second input; 310-output connector; 311-output hose; 410-an exhaust valve; 420-a first one-way valve; 430-a second one-way valve; 440-a regulating valve; 500-shell.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an air-tightness detecting device 10 according to an embodiment of the present invention. As shown in fig. 1, the air-tightness detecting device 10 includes a first air inlet passage 110, a second air inlet passage 170 arranged in parallel with the first air inlet passage 110, an air outlet passage 120 communicated with both the first air inlet passage 110 and the second air inlet passage 170, and an inflating member 220; the first intake passage 110 communicates with the inflator 220; the second air intake passage 170 is used for connecting a compressed air device; the air outlet channel 120 is used for being communicated with an air inlet of an object to be detected; the gas filling member 220 fills the object to be measured with the detection gas through the first gas inlet passage 110 and the gas outlet passage 120.

In this embodiment, when the compressed air device can be provided at the inspection site, the compressed air device is connected to the second air inlet channel 170, and the external compressed air device injects air into the object to be inspected through the second air inlet channel 170 and the air outlet channel 120. When the compressed air device cannot be provided on the detection site, because the air tightness detection device 10 is provided with the air inflation piece 220, the air inflation piece 220 can be utilized to inflate the object to be detected through the first air inlet channel 110, so that the air tightness detection device 10 is not limited by external conditions, the object to be detected can be continuously supplied with air, the use is more flexible, and the use convenience and the use adaptability of the air tightness detection device 10 can be improved.

As shown in fig. 1, in one embodiment, the air-tightness detecting device 10 further includes a pressure detecting channel 130 communicated with the air outlet channel 120, and a pressure detector 140 communicated with the pressure detecting channel 130, wherein the pressure detector 140 is used for detecting the gas pressure in the object to be tested. Since the volume of the container is constant, the volume of the gas is inversely proportional to the pressure. When the airtightness of the object to be measured is good, if gas is continuously introduced into the object to be measured, the pressure value in the object to be measured decreases, and therefore, the pressure value detected by the pressure detector 140 after the gas is introduced decreases as compared with the pressure value detected by the pressure detector before the gas is introduced. If the object to be detected has cracks and the airtightness is not good, the introduced gas leaks out through the cracks, so that the pressure value in the object to be detected is not changed, and whether the airtightness of the object to be detected is good or not can be judged through the pressure detector 140. The pressure detector can be a direct-reading digital display pressure gauge, and the pressure value of gas introduced into the object to be detected is displayed through the pressure gauge in real time, so that the detection operation is more visual. In other embodiments, the air outlet of the object to be measured can be sealed and then immersed in water, whether bubbles emerge or not can be checked, and if bubbles emerge, the air leakage and poor air tightness of the object to be measured can be indicated. The air tightness detecting device 10 can be used for air tightness performance of objects to be detected, such as corrugated pipes or pneumatic valves. The inflation member 220 may be an inflation pump or an inflator, etc.

In yet another embodiment, the air-tightness detecting device 10 further includes a pressure reducing valve and a shut-off valve disposed between the first inlet passage 110 and the outlet passage 120. The pressure in the channel is controlled by the pressure reducing valve, so that accurate and continuous air supply operation for the air inlet of the object to be detected is realized. The stop valve can closely cut off the air flow and ensure the sealing performance of the channel.

As shown in fig. 1, in an alternative embodiment, the air-tightness detecting device 10 further includes an exhaust channel 150 communicating with the air outlet channel 120, and an exhaust valve 410 disposed in the exhaust channel 150. When the air tightness of another object to be detected needs to be detected, the residual gas in the channel can be rapidly and thoroughly discharged through the exhaust valve 410, so that the accuracy of secondary detection is improved. The air inlet channel, the air outlet channel and the exhaust channel can be specifically an air inlet pipe, an air outlet pipe and an exhaust pipe respectively.

Referring to fig. 1, in one embodiment, the air-tightness detecting device 10 further includes a filter 160, the filter 160 is disposed in the exhaust passage 150, and the filter 160 is used for filtering the gas flowing out of the exhaust passage 150. Particulate matters in the exhaust gas or dust harmful to the human body are filtered through the filter 160, so that the harmful gas is prevented from being directly discharged to a working site of an operator, the safety factor of the operator is improved, and the pollution to the environment is reduced. The filter 160 may be activated carbon or a filter screen, etc.

Referring to fig. 1, in an alternative embodiment, the air-tightness detecting device 10 further includes a first input member 210 disposed between the first air inlet passage 110 and the air-filling member 220, and a second input member 230 communicated with the second air inlet passage 170. Thus, when the detection site can provide the compressed air device, the compressed air device can be connected with the external compressed air device through the second input member 230, so that the compressed air can enter the second air inlet channel 170 through the second input member 230, and further can be communicated with the air inlet of the object to be detected through the air outlet channel 120. When the detection scene can't provide the compressed air device, can be through first input piece 210 with aerify 220 intercommunication for aerify 220 and aerify the determinand, through continuously supplying gas, and carry out nimble regulation to gas pressure through the relief pressure valve, thereby realize detecting the leakproofness of determinand such as bellows, avoid the bellows to produce the potential safety hazard in the use.

In a particular embodiment, a first check valve 420 is disposed between the first input 210 and the first intake passage 110; the inlet of the first one-way valve 420 is in communication with the first input 210; a second check valve 430 is disposed between the second input member 230 and the second intake passage 170, and an intake port of the second check valve 430 communicates with the second input member 230. Through setting up first check valve 420 and second check valve 430, prevent that the gas that lets in the determinand from flowing out from first input member 210 and second input member 230, influence the gas tightness and detect. In addition, when the working environment of the object to be tested is a radioactive environment, radioactive dust can be contaminated in the object to be tested, so that the first check valve 420 and the second check valve 430 can play a role in preventing radioactive gas from leaking, harm to operators is reduced, and personal safety of the operators is improved.

In yet another embodiment, a regulating valve 440 is disposed between the second input 230 and the second one-way valve 430, and the regulating valve 440 is used for regulating the flow of the gas input by the second input 230. Through the arrangement, the flow rate of the gas input from the second input member 230 can be flexibly adjusted to adapt to objects to be measured with different sizes of the gas inlets.

In an alternative embodiment, the first input member 210 is an air faucet connector and the second input member 230 is an input adapter. Input adapter specifically can adopt quick adapter, so accessible quick adapter realizes being connected with outside compressed air device's high efficiency, connect through the air cock and realize and aerify 220 high-speed joint, be favorable to improving detection efficiency, the reduction of overhaul time limit for a project, through quick adapter lifting means and outside compressed air device's connection convenience, be favorable to lifting means's performance and application scope.

In a specific embodiment, the air-tightness detecting device 10 further includes an output connector 310 in communication with the air outlet passage 120, and the output connector 310 is in communication with the air inlet of the object to be tested. Gas is introduced into the test object through the output connector 310. So accessible output joint 310 realizes being connected with the quick, high efficiency of determinand air inlet to improve detection efficiency, shorten the overhaul time limit for a project. The air tightness detecting device 10 may further include an output hose 311 inserted and matched with the output connector 310, one end of the output hose 311 is inserted and matched with the output connector 310, and the other end of the output hose 311 is inserted and matched with an air inlet of the object to be detected, so that when the object to be detected is inconvenient to move and is far away from the output connector 310, the object to be detected can be connected through the output hose 311, and the usability and the application range of the device can be improved.

As shown in fig. 1, in a specific embodiment, the air-tightness detecting device 10 further includes a housing 500, wherein a cavity is configured in the housing 500, and the first air inlet channel 110, the second air inlet channel 170, the air outlet channel 120, the air inflation member 220, and the like are all accommodated in the cavity. So accessible casing 500 plays the guard action to the component that holds the intracavity, prevents inside entering cavity such as outside dust and steam for this gas tightness detection device 10 also can have longer life under comparatively abominable and dirty operational environment. Meanwhile, the first air inlet channel 110, the second air inlet channel 170, the air outlet channel 120, the air inflation piece 220 and the like are integrated inside the air tightness detection device 10, so that the air tightness detection work of the object to be detected can be directly carried out, the field assembly is not needed, the detection period can be shortened, the labor is saved, and the carrying and the storage are convenient.

In another embodiment, the housing 500 is further provided with a first opening for the exhaust channel 150 to pass through and a second opening for the exhaust channel 120 to pass through, and the first opening ensures smooth exhaust of the residual gas. By providing the second opening, it is ensured that the air outlet passage 120 can be connected to the air inlet of the external object to be tested to perform air supply operation.

In yet another embodiment, the housing 500 is further provided with assembly holes corresponding to the operation handles of the pressure reducing valve, the stop valve and the exhaust valve 410, and the operation handles can be extended out of the assembly holes, thereby facilitating the operation of the service personnel and facilitating the assembly, disassembly and replacement.

In the actual detection process, the air tightness detection device 10 can realize different detection functions according to opening and closing of different valves. For example, when the stop valve is opened and the exhaust valve 410 is closed, continuous and accurate air supply to the object to be measured can be realized by operating the pressure reducing valve and observing the pressure gauge at the same time. When the cutoff valve is closed and the exhaust valve 410 is opened, the object to be measured and the gas in the first intake passage 110 can be exhausted. When the stop valve and the exhaust valve 410 are closed at the same time, the air tightness of the object to be tested can be judged by observing the pressure value change of the pressure gauge. In the case of air supply, the second inlet 230 may be connected to an external compressed air device to supply air. If the compressed air device can not be provided on the detection site, the first input part 210 is connected with the inflating part 220, so that the inflating part 220 is used for inflating gas into the first gas inlet channel 110, the gas is continuously supplied to the object to be detected, the gas tightness detection function of the object to be detected is realized, the use is more flexible, the device is not restricted by external conditions and the like, and the use convenience and the use adaptability of the gas tightness detection device 10 can be improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An airtightness detection apparatus, comprising:

the air-conditioning device comprises a first air inlet channel (110), a second air inlet channel (170) arranged in parallel with the first air inlet channel (110), an air outlet channel (120) communicated with the first air inlet channel (110) and the second air inlet channel (170), and an air filling piece (220);

the first intake passage (110) communicates with the inflator (220); the second air inlet channel (170) is used for connecting a compressed air device; the air outlet channel (120) is used for being communicated with an air inlet of an object to be detected; the air inflation piece (220) injects detection gas into the object to be detected through the first air inlet channel (110) and the air outlet channel (120).

2. The airtightness detection apparatus according to claim 1, further comprising a pressure detection channel (130) communicating with the gas outlet channel (120), and a pressure detector (140) communicating with the pressure detection channel (130); the pressure detector (140) is used for detecting the gas pressure in the object to be detected.

3. The airtightness detection apparatus according to claim 2, further comprising an exhaust channel (150) communicating with the exhaust channel (120), and an exhaust valve (410) disposed in the exhaust channel (150).

4. The tightness detection device according to claim 3, further comprising a filter (160) disposed within the exhaust channel (150); the filter (160) is used for filtering the gas flowing out of the exhaust passage (150).

5. The tightness detection device according to claim 1, characterized in that said first air intake channel (110) is provided with a first one-way valve (420); and a second one-way valve (430) is arranged on the second air inlet channel (170).

6. The tightness detection device according to claim 5, further comprising a first input (210) communicating with the first air intake channel (110), the first input (210) communicating with the air inflation member (220);

the air tightness detection device further comprises a second input member (230) communicated with the second air inlet channel (170), and the second input member (230) is used for being communicated with a compressed air device.

7. The tightness detection device according to claim 6, characterized in that between said second input (230) and said second one-way valve (430) there is provided a regulating valve (440); the regulating valve (440) is used for regulating the gas flow input by the second input part (230).

8. Air-tightness detection device according to claim 6, characterized in that said first input member (210) is an air tap connector communicating with said inflating member (220).

9. The tightness detection device according to claim 6, characterized in that said second input member (230) is an input adapter; the input adapter is used for being connected with the compressed air device.

10. The airtightness detection apparatus according to claim 6, further comprising an output connector (310) in communication with the air outlet channel (120), wherein the output connector (310) is configured to communicate with an air inlet of the object to be tested.